The report offers highway engineers guidance in designing interchanges so as to reduce the likelihood of truck accidents on highway interchanges. The report summarizes research showing that the interaction between truck dynamics and interchange geometry can contribute to rollovers, jackknifes, and other loss-of-control accidents. Engineers can apply corrective actions to six specific ramp design features that were found to contribute to truck accidents: poor transitions to superelevation, abrupt changes in compound curves, short deceleration lanes preceding tight-radius exists, curbs placed on the outside of ramp curves, lowered friction levels on high speed ramps, and substantial downgrades leading to tight ramp curves. Countermeasures for these design problems include incorporating a greater safety margin into formulations for side friction factors, reviewing and modifying posted speed limits, improving curve condition and downgrade signs at interchanges, increasing deceleration lane length, overlaying curbs with wedges of pavement or eliminating curbs altogether, resurfacing ramps with high-friction overlays, and redesigning sites where accidents are common.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Improving Truck Safety at Interchanges


    Beteiligte:
    M. Firestine (Autor:in) / H. McGee (Autor:in) / P. Toeg (Autor:in)

    Erscheinungsdatum :

    1989


    Format / Umfang :

    38 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Effects of Geometric Characteristics of Interchanges on Truck Safety

    B. Janson / J. Kononov / W. Awad et al. | NTIS | 1999


    Safety Analysis of Interchanges

    Torbic, Darren J. | Online Contents | 2009


    Safety Analysis of Interchanges

    Torbic, Darren J. / Harwood, Douglas W. / Gilmore, David K. et al. | Transportation Research Record | 2009


    Safety Analysis of Freeway Interchanges

    He, Yulong / Sun, Xiaoduan / Coakley, Richard C. | ASCE | 2008


    Safety Analysis of Freeway Interchanges

    He, Y. / Sun, X. / Coakley, R.C. et al. | British Library Conference Proceedings | 2008